Lock-nut.



C. C. STUBBLEHELD & F. C. HAWKINS.

LOCK NUT.

APPLICATION FILED SEPT- 9. 1916-.

Patented May 15, 1917.

alien let;

UNITED STATES PATENT OFFICE.

CHARLIE C. STUBBLEIEIELD AND FRANK C. HAWKINS, OIE ROGERS, ARKANSAS.

LOCK-NUT.

To all whom z'tmay concern:

Be it known that we, CHARLIE C. STUB- .BILEFIELD and FRANK (J. HAWKINS, citizens of the United States, residing at Rogers, in the county of Benton and State of Arkansas, have invented certain useful .Im-

provements in Locl -Nuts, of which the following is a specification, reference being had therein to the accompanymg drawing.

The invention relates to nut locks, and has for its primary object toprovide a lock of this character wherein the nut can be conveniently turned on the threaded bolt in a direction for tightening the bolt in a part or piece of work, the said nut being held against working off of the bolt, and should it be desired to remove the nut from the latter, the lock can be readily detached for- .this purpose.

Another object of the invention is the provision of a nut lock of this character wherein the lock is mounted within the nut I in a novel manner, and by reason of its "'construction, the use of locking dogs, set

screws, or the like are eliminated, and the lock When in the nut can not possibly work out of the same.

A further objectof theinvention is the provision of a nut lock of this character wherein the lock is held within a suitable groove formed in one face of the nut, so that the lock is flushed with the grooved face of the nut, and will serve to automatically fasten the nut in its adjusted position,

when turned upon the bolt.

A still further object of the invention is A the provision of a nut lock of this character which is simple in construction, thoroughly reliable and eflicient in itspurpose, strong,

durable, and inexpensive in manufacture.

With these and other ob ects in view, the invention consists 1n the features of construction, combination, and arrangement of parts, as will be hereinafter fully described, illustrated in the accompanying drawings, and pointed out .in' the claim hereunto appended.

In the accompanying drawing Figure 1 is an elevation of a nut lock constructed in accordance with the. invention,

upon a bolt.

Fig. 2 is a side elevation of the bolt. and

nut.

Fig. 3 is a-sectional view on'the line of Fig.. 1.

Specification of Letters Patent.

Patented May 15, 1917.

Fig. 4 is a fragmentary sectional view-on the line H of Fig. 2.

Similar reference characters indicate cor- .responding parts "throughout the several views in the drawing.

Referring to the drawing in detail, A designates a bolt which is provided along its threaded portion with longitudinal grooves 5, and upon this threaded portion is adjustably mounted a nut 6, carrying a look here inafter described.

The nut 6 in its outer face, is formed with an annular groove 7 which is disposed concentrically, of the bolt receiving opening, and inter-secting this groove 7 and the bolt receiving opening in said nut is an angular cut away portion 8, while at a point approximately diametrically opposed said cut away portion, in the bed, or bottom of the groove 7, is a socket 9, for a-purpose presently described.

(Mounted for relative movement within the groove 7 is a lock which comprises a substantially semi-circular resilient member 10, which is preferably formed from a wire having. the requisite resiliency, bent at oneend thereof, to for a righ .choring terminal 11, which is provided with a bifurcation, to provide slightly spread resilient fingers 1'2, and this terminal 11 with beveled face 14, and this terminal lies Within the cut away portion 8, in the nut 6, so that its beveled portion will protrude into the bolt receiving opening in the said nut to co-act with any one of the longitudinal grooves 5, in the threaded portion of the bolt A, for the positive locking of the nut upon the bolt on 'the turning of said nut in a direction for the tightening of the bolt in a piece of work or part.

The groove 7 in the outer face of the nut 6 is of a depth so that the locking member 10, when therein, will be substantially flush with the outer face of said nut.

It will be apparent that this locking member can be readily removed from the groove by'the use of asuitable implement, or tool, ada'ptable'for prying the member 10-without the socket 9, and the "groove 7 in the outer face of the nut.

t angular 'anis bent inwardly to form a locking terminal 13, having a From the foregoing it isthought that the construction and manner of operation oftlie "nut will be clearly understood, andtherefore, a more extended explanation has been. omitted.

-Wha't is claimed is The combination with a bolt, having .a threaded portion provided with longitudinally disposed grooves, of a nut adjustably mountedon the threaded portion of the bolt,

and having an annular groove in: its outer face concentrically of the bolt, and also provided with a socket and a cut away portion diametrically opposite each other, the cut away portion inter-seating the opening in the nut for .the bolt, and said groove, a resilient'semicircular locking member seated within. the groove, a right angular. bifurcated terminal on said member," engaged in the socket, andan inwardly bent locking terminal. on said member, and lying within the cut away portion to co-act with the grooves in the bolt. a

In testimony whereof we affix our signatures.

CHAR-LIE o. STUBBLEFIELD. FRANK o. HAWKINS. 

